QuadPlane Conversion of Volantex Ranger EX (Part 2)

Yes, I try to show that is in concordance with copter firm; I think that it´s has sense that is similar with copter fw for what you mention that many of Us have different vehicles type; if for copter quad is =1 and for quadplane it´s =0 our mind going to explode LoL.; I think they are merging but better if devs can clarificate.
Sorry my bad english to explain.

Greg, I’m currently in 3.8 beta as well. “1” for me shows “quad”. “0” is marked “undefined” Is there something I’m not seeing?

Alex,

I’m using Mission Planner v1.3.48. In the Full Parameter List, the description says “0 = Quad, 1 = Hexa” and so on. It may be possible that both Mission Planner and the Wiki are not updated yet.

Cala,

Your English is still better than any other language I try to speak. :slight_smile:

At this point, if I don’t find a solution to my FBWA issue, I will likely revert back to v.3.6.0 and see if it still exists.

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See screen shot attached from my mission planner. Odd we have different listed parameters. Although I’m using V3.8.0 beta 6. Perhaps that is the discrepancy.

Yeah, that’s interesting. I wouldn’t think the Pixhawk firmware would control the text.

I hosted my log file below from the latest test flight. Feel free to look for something wrong.

Test Flight 2 Log (16meg)
http://www.gregcovey.com/Reviews/00000058.BIN

Just a note that this thread has temporarily moved to the issue thread below.

QuadPlane Pitches Up using v3.8.0 beta 5

After seeing the video below, several guys have suggested that my wing has structural issues from the quad rotor torsion and I agree.

Returning to this thread from the one in the above post. I have re-loaded v3.8.0 and reset to default parameters waiting to test transition from QSTABILIZE to FBWA mode. The main changes were to convert from X-frame to H-frame and use 60lb fishing line to anchor the booms. Details are in the issue thread above. My current .param file is below.

RangerEX_QuadPlaneHframeV380ClearParams2.param (16.0 KB)

The flying field was too busy with people, RVs, and campers this weekend for experimental testing so I flew my Ranger with the normal wing set to gather logs and just hover tested my mini Talon. Since my stock Ranger power system requires 70% throttle on 4s to cruise around using FBWA and CRUISE modes, I decided to upgrade my motor and ESC, keeping the 10x6 prop and 4s8AH Lipo. The extra power will help when the heavier quad rotor wing is used which also adds drag.

I had several nice 15 minute flights which only used 50% of the 4s 8AH pack. Here is a graph of my ThrOut. You can see CRUISE mode working around the 10 minute mark but the whole flight centered around 60%-70% throttle.

Stock Ranger Setup on 4s
Stock Motor: 3715 outrunner 1000kv
Stock ESC: 40-amp with BEC
Stock Prop: 10x6
Battery: 4s 8AH Nano-Tech

I’ll be using the Turnigy SK3 3542-1250kv motor with the same prop and battery but a heavy duty 60-100 amp ESC. This combination provides 746 watts at 51 amps using the same 10x6 prop.

For my new ESC, I choose this Turnigy AE-100A Brushless ESC because it was in stock at the US warehouse along with my SK3 motor. The 65A or 80A Turnigy AE Series ESCs would work just as well. This series ESC has a very capable 5v 4amp BEC.

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Greg - an update on my Ranger…I installed fw version 3.8 and had 3 very successful flights last week. Transitions are butter smooth. I also did a round of autotune (first time since installing the quad components) and the gains did change somewhat from their previous settings. The weather vane function and forward motor assist works really well in QLoiter mode.

Good to see you’ve upgraded the motor. I also have a Turnigy 3542 although mine is 1000KV and I’m swinging an 11 x 5.5.

Happy days!

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Hi Jacques,

Thanks for the update! I am glad your Ranger is working well now. I have never considered an Autotune on a QuadPlane so I might look into it. Does your setup with v3.8 use an H-frame? I hope to test my Ranger this weekend.

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Confirmation that I am using the X config.

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My power system upgrade arrived today. Hopefully, I can get it installed and test it this weekend. The plan would be to first test it as a normal plane using v3.8.0 firmware, and then swap the QuadPlane wings on for a Hover/Transition test.

The Turnigy SK3 motors are good quality and full throttle will rarely be used…maybe on a normal plane take-off. With the 10" prop, full throttle is only 51amps so my Turnigy AE-100A ESC is overkill. It was in stock in the US warehouse along with the motor so I got it. The goal is to reduce my throttle setting from 60%-70% when flying as a normal plane so that I had more power available when adding the extra weight and drag of the QuadPlane wing.

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The new power system installed easily. I used the same upthrust as before by placing nylon prop hub washers on the lower two screws. I like that the prop is held more securely by a washer and nut instead of the stock adapter. I taxied around in my backyard to test it out. Everything seems to work great so I’m ready to test both normal wing flying for the new ThrOut setting and then the Quad wing for transition using v3.8.0. It looks good for this weekend…

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The new motor test went very well! I’ll have a video soon.

My take-off in MANUAL mode and faster flying in FBWA mode was at 50% throttle or less.

My CRUISE mode throttle was 30% to 40% depending upon direction around the field.

My CRUISE mode current was 5-15amps.

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The stock Volantex power system was replaced with a Turnigy SK3 3542-1250kv motor and Turnigy AE Series ESC. With the 10" prop, full throttle is only 51amps so my Turnigy AE-100A ESC is overkill. It was in stock in the US warehouse along with the motor so I got it. The goal was to reduce my throttle setting from 60%-70% when flying as a normal plane so that I had more power available when adding the extra weight and drag of the QuadPlane wing. My take-off in MANUAL mode and faster flying in FBWA mode was at 50% throttle or less. My CRUISE mode throttle was 30% to 40% depending upon direction around the field with a CRUISE mode current between 5-15amps. I was very happy with the results!

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Just wanted to share the guy wire mod I finally got around to getting done. Hopefully will test it at the next good weather day.

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Be carefull with that motors props mount, I had the same and reemplace them as other user advice me.

Greg, I understand that you have abandoned the Ranger conversion, and moved the gear over to your FX-79. Did you find the ranger unsuitable for conversion compared to your other conversions? I have all the parts for the ranger project, but have considered transferring this to my own FX-79 after reading your blog. It seems you have found it a better candidate?

Hi Will,

It’s a valid question and my answer has changed with my experience and needs. During my testing of the Ranger EX, I had two sets of wings. As I tested various things to get the QuadPlane conversion working, I was having great success flying it as an APM plane and less success flying it as a QuadPlane. The Ranger EX quad wings became cumbersome with the relatively weak wings not meant for the added weight and twisting and the cables needed to help stabilize them. Other folks, like Rollys and Jacques, have had success but they have also modified their wings.

One of my original goals back when I did the smaller Bix3 conversion was to use two sets of wings so that I could go between a plane and a QuadPlane. The mini Talon conversion convinced me there is merit in a dedicated QuadPlane design. Since I enjoyed flying the Ranger EX as a plane and I could take off from a field without tossing it, I decided to move on to other projects.

I searched a while before I landed on the FX-79 two meter wing. The price and dimensions seemed right and I loved the huge bay area. So far, my conversion project has been a great deal of fun. The wing design and strength required no modifications and I will not have to hand-toss it to get airborne.

It may officially be Spring but we still have snow on the ground here in Upstate NY. I have over 20 test flights backed up and the FX-79 is near the top of my list. So, time will soon tell if this conversion is successful.